Regulations of Connecticut State Agencies
(a) The lenses in a signal face shall be arranged in a vertical or horizontal straight line except that in a vertical array lenses of the same color may be arranged horizontally adjacent to each other at right angles to the basic straight line arrangement. Such clusters shall be limited to two identical lenses or to two or three different lenses of the same color.
(b) In each signal face, all red lenses in vertical signals shall be located above and in horizontal signals shall be located to the left of all yellow and green lenses.
(c) The relative positions of lenses within the signal face shall be as follows:
(1) In a vertical signal face from top to bottom:
Circular red
Left turn red arrow
Right turn red arrow
Circular yellow
Circular green
Straight through green arrow
Left turn yellow arrow
Left turn green arrow
Right turn yellow arrow
Right turn green arrow
(2) In a horizontal signal face from left to right:
Circular red
Left turn red arrow
Right turn red arrow
Circular yellow
Left turn yellow arrow
Left turn green arrow
Circular green
Straight through green arrow
Right turn yellow arrow
Right turn green arrow
(3) In a cluster, identical signal indications may be repeated in adjacent vertical or horizontal locations within the same signal face. If adjacent indications in a cluster are not identical, their arrangement shall follow paragraph 1 or 2 above, as applicable.
(Effective November 3, 1981; Amended December 9, 1999)